42158251138 has 8 divisors (see below), whose sum is σ = 63243392832. Its totient is φ = 21077120196.

The previous prime is 42158251123. The next prime is 42158251147. The reversal of 42158251138 is 83115285124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42158251138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976270 + ... + 1018537.

It is an arithmetic number, because the mean of its divisors is an integer number (7905424104).

Almost surely, 2^42158251138 is an apocalyptic number.

42158251138 is a deficient number, since it is larger than the sum of its proper divisors (21085141694).

42158251138 is a wasteful number, since it uses less digits than its factorization.

42158251138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005376.

The product of its digits is 76800, while the sum is 40.

The spelling of 42158251138 in words is "forty-two billion, one hundred fifty-eight million, two hundred fifty-one thousand, one hundred thirty-eight".